Patents by Inventor John C. Greenford

John C. Greenford has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Needleless syringe using supersonic gas flow for particle delivery
    Patent number: 7618394
    Abstract: A needleless syringe having a membrane (28) which is ruptured by gas pressure to generate a supersonic gas flow in which particles containing a therapeutic agent are injected.
    Type: Grant
    Filed: December 9, 2002
    Date of Patent: November 17, 2009
    Assignee: Powderject Research Limited
    Inventors: Brian J. Bellhouse, David F. Sarphie, John C. Greenford
  • Needleless syringe using super sonic gas flow for particle delivery
    Patent number: 6881200
    Abstract: A needleless syringe having a membrane (28) which is ruptured by gas pressure to generate a supersonic gas flow in which particles containing a therapeutic agent are injected.
    Type: Grant
    Filed: February 10, 1999
    Date of Patent: April 19, 2005
    Assignee: PowderJect Research Limited
    Inventors: Brian J. Bellhouse, David F. Sarphie, John C. Greenford
  • NEEDLELESS SYRINGE USING SUPER SONIC GAS FLOW FOR PARTICLE DELIVERY
    Publication number: 20020188248
    Abstract: A needleless syringe having a membrane which is ruptured by gas pressure to generate a supersonic gas flow in which particles containing a therapeutic agent are injected. This provides effective transdermal delivery of the therapeutic agent.
    Type: Application
    Filed: February 10, 1999
    Publication date: December 12, 2002
    Inventors: BRIAN J. BELLHOUSE, DAVID F. SARPHIE, JOHN C. GREENFORD
  • Needleless syringe using supersonic gas flow for particle delivery
    Patent number: 6168587
    Abstract: A needleless syringe having a membrane (28) which is ruptured by gas pressure to generate a supersonic gas flow in which particles containing a therapeutic agent are injected.
    Type: Grant
    Filed: December 5, 1997
    Date of Patent: January 2, 2001
    Assignee: PowderJect Research Limited
    Inventors: Brian J. Bellhouse, David F. Sarphie, John C. Greenford
  • Needleless syringe using supersonic gas flow for particle delivery
    Patent number: 5899880
    Abstract: A needleless syringe having a membrane which is ruptured by gas pressure to generate a supersonic gas flow in which particles containing a therapeutic agent are injected.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 4, 1999
    Assignee: Powderject Research Limited
    Inventors: Brian J. Bellhouse, David F. Sarphie, John C. Greenford
  • Method of delivering powder transdermally with needless injector
    Patent number: 5630796
    Abstract: A needleless syringe having a membrane which is ruptured by gas pressure to generate a supersonic gas flow in which particles containing a therapeutic agent are injected. This provides effective transdermal delivery of the therapeutic agent.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 20, 1997
    Assignee: Oxford Biosciences Limited
    Inventors: Brian J. Bellhouse, David F. Sarphie, John C. Greenford